templates/index.html

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Vimeo Downloader</title>
    <style>
      body {
        font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
          Helvetica, Arial, sans-serif;
        background-color: #f0f2f5;
        display: flex;
        justify-content: center;
        align-items: center;
        min-height: 100vh;
        margin: 0;
        padding: 1rem;
        box-sizing: border-box;
      }
      .container {
        background: white;
        padding: 2rem 2.5rem;
        border-radius: 8px;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        width: 100%;
        max-width: 500px;
      }
      h1 {
        font-size: 1.75rem;
        color: #1c1e21;
        margin: 0 0 1.5rem 0;
        text-align: center;
      }
      .form-group {
        margin-bottom: 1rem;
      }
      label {
        display: block;
        margin-bottom: 0.5rem;
        font-weight: 600;
        color: #606770;
      }
      input,
      select,
      button {
        width: 100%;
        padding: 0.75rem;
        font-size: 1rem;
        border-radius: 6px;
        border: 1px solid #dddfe2;
        box-sizing: border-box;
      }
      button {
        background-color: #007bff;
        color: white;
        border: none;
        cursor: pointer;
        font-weight: bold;
        transition: background-color 0.2s;
      }
      button:disabled {
        background-color: #a0c9f8;
        cursor: not-allowed;
      }

      #progress-container {
        display: none;
        margin-top: 1.5rem;
      }
      #progress-bar-wrapper {
        width: 100%;
        background-color: #e9ecef;
        border-radius: 0.25rem;
        overflow: hidden;
        height: 30px;
        border: 1px solid #ddd;
      }
      #progress-bar {
        height: 100%;
        background-color: #007bff;
        color: white;
        text-align: center;
        line-height: 30px;
        font-weight: bold;
        transition: width 0.3s ease;
        width: 0%;
        min-width: 60px;
      }
      #status-text {
        text-align: center;
        margin-top: 0.75rem;
        font-weight: 500;
        color: #495057;
        min-height: 20px;
      }
      #download-link-container {
        text-align: center;
        margin-top: 1rem;
      }
      #download-link-container a {
        display: inline-block;
        padding: 0.75rem 1.5rem;
        background-color: #28a745;
        color: white;
        text-decoration: none;
        border-radius: 6px;
        font-weight: bold;
      }
      .debug {
        font-size: 12px;
        color: #666;
        margin-top: 5px;
        text-align: center;
      }
    </style>
  </head>
  <body>
    <div class="container">
      <h1>Vimeo Downloader</h1>
      <form id="download-form">
        <div class="form-group">
          <label for="url">URL</label>
          <input
            type="text"
            id="url"
            name="url"
            placeholder="Paste Vimeo URL here"
            required
          />
        </div>
        <div class="form-group">
          <label for="format">Format</label>
          <select id="format" name="format">
            <optgroup label="Audio">
              <option value="mp3" selected>MP3</option>
              <option value="m4a">M4A</option>
              <option value="flac">FLAC</option>
              <option value="opus">OPUS</option>
              <option value="wav">WAV</option>
            </optgroup>
            <optgroup label="Video">
              <option value="1080">MP4 (1080p)</option>
              <option value="720">MP4 (720p)</option>
              <option value="480">MP4 (480p)</option>
              <option value="360">MP4 (360p)</option>
              <option value="1440">MP4 (1440p)</option>
            </optgroup>
          </select>
        </div>
        <button type="submit" id="download-button">Download</button>
      </form>

      <div id="progress-container">
        <div id="progress-bar-wrapper">
          <div id="progress-bar">0%</div>
        </div>
        <div id="status-text">Starting...</div>
        <div id="debug-info" class="debug"></div>
        <div id="download-link-container"></div>
      </div>
    </div>

    <script>
      const form = document.getElementById("download-form");
      const button = document.getElementById("download-button");
      const progressContainer = document.getElementById("progress-container");
      const progressBar = document.getElementById("progress-bar");
      const statusText = document.getElementById("status-text");
      const debugInfo = document.getElementById("debug-info");
      const downloadContainer = document.getElementById(
        "download-link-container"
      );

      let eventSource;

      form.addEventListener("submit", function (e) {
        e.preventDefault();

        // Reset UI
        button.disabled = true;
        button.textContent = "Downloading...";
        progressContainer.style.display = "block";
        downloadContainer.innerHTML = "";

        // Reset progress bar
        progressBar.style.width = "0%";
        progressBar.textContent = "0%";
        progressBar.style.backgroundColor = "#007bff";
        statusText.textContent = "Connecting...";
        debugInfo.textContent = "";

        // Close existing connection
        if (eventSource) {
          eventSource.close();
        }

        // Build URL
        const formData = new FormData(form);
        const params = new URLSearchParams(formData);
        const streamUrl = `/stream-download?${params}`;

        console.log("Starting EventSource:", streamUrl);
        eventSource = new EventSource(streamUrl);

        eventSource.onopen = function (event) {
          console.log("EventSource opened");
          statusText.textContent = "Connected to server...";
        };

        eventSource.onmessage = function (event) {
          try {
            const data = JSON.parse(event.data);
            console.log("Received:", data);

            const progress = parseFloat(data.progress || 0);
            const status = data.status || "unknown";

            // Update debug info
            debugInfo.textContent = `Status: ${status} | Progress: ${progress.toFixed(
              1
            )}%`;

            // Update progress bar
            progressBar.style.width = `${progress}%`;
            progressBar.textContent = `${progress.toFixed(1)}%`;

            // Update status and colors
            switch (status) {
              case "waiting":
                statusText.textContent = "Waiting for server...";
                progressBar.style.backgroundColor = "#6c757d";
                break;
              case "initializing":
                statusText.textContent = "Initializing download...";
                progressBar.style.backgroundColor = "#007bff";
                break;
              case "fetching_info":
                statusText.textContent = "Fetching video information...";
                progressBar.style.backgroundColor = "#007bff";
                break;
              case "preparing":
                statusText.textContent = "Preparing download...";
                progressBar.style.backgroundColor = "#007bff";
                break;
              case "starting_download":
                statusText.textContent = "Starting download...";
                progressBar.style.backgroundColor = "#007bff";
                break;
              case "downloading":
                const eta = data.eta || 0;
                const speed = data.speed || "0 MB/s";
                statusText.textContent = `Downloading... ETA: ${eta}s at ${speed}`;
                progressBar.style.backgroundColor = "#007bff";
                break;
              case "processing":
                statusText.textContent = "Processing file...";
                progressBar.style.backgroundColor = "#ffc107";
                progressBar.textContent = "Processing...";
                break;
              case "complete":
                statusText.textContent = "Download Complete!";
                progressBar.style.backgroundColor = "#28a745";
                progressBar.textContent = "Done!";

                if (data.filename) {
                  downloadContainer.innerHTML = `<a href="/download-file/${data.filename}" download>Click to Save File</a>`;
                }

                eventSource.close();
                resetButton();
                break;
              case "error":
                const errorMsg = data.message || "Download failed";
                statusText.textContent = `Error: ${errorMsg}`;
                progressBar.style.backgroundColor = "#dc3545";
                progressBar.textContent = "Error!";

                eventSource.close();
                resetButton();
                break;
            }
          } catch (err) {
            console.error("Error parsing message:", err, event.data);
            statusText.textContent = "Error processing server response";
            resetButton();
          }
        };

        eventSource.onerror = function (event) {
          console.error("EventSource error:", event);
          statusText.textContent = "Connection error. Please try again.";
          eventSource.close();
          resetButton();
        };
      });

      function resetButton() {
        button.disabled = false;
        button.textContent = "Download";
      }

      // Cleanup on page unload
      window.addEventListener("beforeunload", function () {
        if (eventSource) {
          eventSource.close();
        }
      });
    </script>
  </body>
</html>